I suspect "downtime" is being used as the opposite of "uptime" -- as in, the last time your computer was off or rebooted.

I'm still looking for the "had to move" option. that's the reason i shut my work machine down today, 556 ... it's also the reason why i shut it down 556 days ago (i think it had over 2 years of uptime before that)

When putting a smiley right before a closing parenthesis, do you:

Use two parentheses: (Like this: :) )
Use one parenthesis: (Like this: :)
Reverse direction of the smiley: (Like this: (: )
Use angle/square brackets instead of parentheses
Use C-style commenting to set the smiley off from the closing parenthesis
Make the smiley a dunce: (:>
I disapprove of emoticons
Other